I'm fine with arguing that $pro{je,du}ct is better for most cases. But that doesn't mean the other alternatives have to be denigrated as being pure shit. That's not going to convince anybody that's not already convinced, and stirs um enmity.
FWIW, I think both postgres and mysql/mariadb benefit from the competition.
Do I think that postgres is overall the better project? Yes. Do I think mysql is shit? No.
There is not much philosophy here: MySQL should have never been used since it's always been busted, and thankfully now it's lost so much market share that it's become all but irrelevant. If you want to build bullet proof, robust systems and don't want or can't afford Oracle, one of PostgreSQL variants is a critical piece for building such a system.
I like sleeping through my nights instead of wasting my life away troubleshooting MySQL. How about you?
I waste them working on postgres. Doesn't mean I've to denigrate other systems.
Meanwhile PostgreSQL has always been about reliability and stability and has been getting better and better with every release.